Algorithm for Image Retrieval Based on Edge Gradient Orientation Statistical Code

Figure 5

EGOSC for Lena image with varied illumination.

(a) Original Lena image

(b) Lena image with decreased illumination

(c) Lena image with increased illumination

(d) Normalized EGOSC for image (a)

(e) Normalized EGOSC

(f) Normalized EGOSC for image (c) and for image (b)